What is hydrogen economy ?

What is hydrogen bomb?

Write a short note on hydrogen economy.

What is hydrogenation? what is its industrial application?

What is the electronic configuration of a hydrogen atom ?

What is the angular momentum of an electron in ground state in hydrogen atom?

What is the ratio of radii of the orbits corresponding to first excited state and ground state in a hydrogen atom?

What is the diameter of hydrogen atom?

What is the cause of formation of hydrogen bond?